Luminaire hub



FIG. 1 is a top perspective view of a luminaire hub, showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a bottom perspective showing the environment in which the luminaire hub is used, the environment including four luminaire leg components attached to the luminaire hub.

The broken lines represent portions of the luminaire hub that form no part of the claimed design. 

CLAIM The ornamental design for a luminaire hub, as shown and described. 